CT scan of ventriculoperitoneal shunt <br />Image credit: James Heilman, MD, 2016</br>“><br /><em>The doctor fits the shunt while the person is under general anesthetic. <br />Image credit: James Heilman, MD, 2016</em></div><p>The doctor will give a person a general anesthetic before they fit the ventriculoperitoneal shunt. Once the person is completely asleep, the doctor will drill a small hole in their skull through an incision behind their ear.</p><p>The doctor will then insert the inflow catheter into the brain. They will fit a valve to the end of the catheter to control how it works. They feed the outflow catheter under the skin which leads into to a small incision in the abdomen. From here, the body can reabsorb the drained CSF.</p><p>Once the doctor connects all parts of the shunt, the shunt system will start draining CSF fluid from the brain.</p><p> <span class=